Mercedes W204 W207 W211 W639 OM642 Diesel Left N/S Exhaust Manifold A6421420102

Mercedes W204 W207 W211 W639 OM642 Diesel Left N/S Exhaust Manifold is a factory exhaust system component designed for Mercedes diesel engines with the OM642 unit. This used manifold, mounted on the left side, ensures proper exhaust gas discharge from the cylinder head, stable turbocharger operation, and correct thermal conditions in the engine bay. Thanks to its original OEM design, it provides a reliable solution for repairs and maintenance of the exhaust system in diesel vehicles.

Specifications and technical data

• SKU: A6421420102
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6421420102
• Substitutable numbers: A6421420102, A 642 142 01 02
• Location on the vehicle: Left
• Fuel type: Diesel
• Category: Manifolds & Headers

Purpose and compatibility with the OM642 engine

The manifold has been designed specifically for the OM642 unit, used in popular Mercedes C-Class, E-Class, CLK models, and commercial vehicles. The dedicated left-side placement ensures a perfect fit to the cylinder head, turbocharger, and the rest of the exhaust system. The appropriate geometry of the exhaust channels promotes even cylinder scavenging, which translates into stable operation of the diesel engine.

Construction and function in the exhaust system

As an element from the Exhaust manifolds group, this part is responsible for collecting exhaust gases from individual cylinders and directing them to subsequent components, such as the turbocharger or catalytic converter. The solid, cast-iron construction ensures resistance to high temperatures and pulsating loads typical of diesel engines. Properly shaped connection ports facilitate a tight seal with the cylinder head and minimize the risk of leaks that could cause power loss or errors in the engine control system.

Application in Mercedes diesel vehicles

The presented exhaust manifold is intended for Mercedes vehicles equipped with a diesel engine. The design, adapted for operation with diesel fuel, ensures adequate durability against increased exhaust pressure and the operating temperatures characteristic of this unit. The left-side placement allows for a direct replacement of the worn component without the need for modifications to the exhaust system or cylinder head.

Benefits of using an original manifold

Using an original exhaust manifold in the OM642 engine allows for maintaining factory exhaust flow parameters, which promotes proper turbine operation, maintains correct boost pressure, and ensures proper regeneration of filters and exhaust gas cleaning elements. Precise fitment to the power unit limits the risk of installation stress, cracks, or leaks, thereby reducing the likelihood of costly failures in the future.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as manifolds, connection sections, or mounting elements, check the available parts in the Mercedes Exhaust manifolds category.

To better understand the impact of the manifold on performance and exhaust system characteristics, as well as to learn practical tips on selecting used components, it is worth checking out the guide: Performance exhaust system: used manifolds and sports catalytic converters on the road.